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  1. Vitamin D toxicity: What if you get too much? - Mayo Clinic

    Feb 20, 2025 · Vitamin D toxicity is a rare condition that happens when too much vitamin D is in the body. The condition can have serious effects on health. Another name for it is …

  2. Toxic hepatitis - Symptoms and causes - Mayo Clinic

    Aug 5, 2025 · The symptoms of toxic hepatitis often go away when contact with the toxin stops. But toxic hepatitis can damage the liver, leading to scarring of liver tissue, called cirrhosis. …

  3. Lead poisoning - Symptoms & causes - Mayo Clinic

    Oct 30, 2025 · Learn about lead poisoning symptoms and treatment of lead exposure in children and adults. Explore ways to keep your kids safe from lead exposure.

  4. Vitamin A - Mayo Clinic

    Apr 17, 2025 · Vitamin A is a nutrient the body uses to support growth, vision and cell function. It's also called retinol or retinoic acid. Vitamin A has antioxidant properties. Antioxidants are …

  5. Niacin overdose: What are the symptoms? - Mayo Clinic

    May 14, 2024 · When niacin is taken as prescribed for high cholesterol, overdose is unlikely.

  6. Alcohol poisoning - Diagnosis and treatment - Mayo Clinic

    Apr 29, 2023 · Diagnosis In addition to checking for visible signs and symptoms of alcohol poisoning, your doctor will likely order blood and urine tests to check blood alcohol levels and …

  7. Digoxin (oral route) - Side effects & dosage - Mayo Clinic

    Jan 1, 2026 · Hypokalemia (low potassium in the blood) or Hypomagnesemia (low magnesium in the blood)—Increased risk of digoxin toxicity. Kidney disease—Use with caution. The effects …

  8. Serotonin syndrome - Symptoms & causes - Mayo Clinic

    Sep 12, 2024 · Serotonin syndrome is a serious drug reaction. It is caused by medications that build up high levels of serotonin in the body. Serotonin is a chemical that the body produces …

  9. Vitamin B-6 - Mayo Clinic

    Aug 13, 2025 · Vitamin B-6 (pyridoxine) is important for normal brain development and for keeping the nervous system and immune system healthy. Food sources of vitamin B-6 include …

  10. Too much vitamin C: Is it harmful? - Mayo Clinic

    Feb 20, 2025 · Vitamin C is an essential nutrient, but you can get too much of it. If you're an adult, limit yourself to no more than 2,000 milligrams (mg) of vitamin C a day. The recommended …